Double-Roller Floor Washing Robot and Floor Washing Method Thereof

ABSTRACT

A double-roller floor washing robot and floor washing method thereof, the double-roller floor washing robot comprising a robot body, wherein the robot body is provided with a cleaning apparatus; the cleaning apparatus comprises a roller assembly and a water circulation system; the roller assembly comprises a first roller, a second roller, and a roller drive apparatus; the water circulation system comprises a clear water tank, a roller gear box, a drain water tank, and a fan; the first roller and the second roller are located in the roller gear box; the roller gear box is provided with a water flow passage; the clear water tank is in communication with the water flow passage; the roller gear box is in communication with the drain water tank; the drain water tank is in communication with the fan; and the fan is in communication with an air outlet.

CROSS-REFERENCE TO RELATED APPLICATION

The present application is filed based on and claims priority to aChinese Patent Application No. CN202011094338.X filed on Oct. 14, 2020which is incorporated herein by reference in its entirety.

TECHNICAL FIELD

The present invention relates to the field of floor washing robots, andmore particular to a double-roller floor washing robot and floor washingmethod thereof.

BACKGROUND

Chinese patent CN 111568326 A discloses an elevating apparatus for amopping roller of a sweeping robot, comprising a body, wherein the bodyis provided thereon with a cleaning apparatus; the cleaning apparatuscomprises a mopping roller; a mop is disposed on the mopping roller; thebody is internally provided with an elevating apparatus; the elevatingapparatus comprises a drive apparatus; the drive apparatus is connectedto the cleaning apparatus; the body is provided thereon with a rollerbracket; and the cleaning apparatus is disposed on the roller bracket.

Such sweeping robot also comprises a mopping roller, but has thefollowing defects during cleaning: first, after the floor is cleaned,the mop on the roller needs to be manually disassembled for cleaning;the disassembly, cleaning and assembly operations are troublesome, and auser needs to shut down the robot, thus causing great inconvenience tothe user; second, when a sweeper with the structure is used, cleaningrubbish and mopping the floor are completed in two steps, that is,cleaning rubbish is performed by utilizing a cleaning structure, andmopping the floor is performed by utilizing the structure of the moppingroller. At present, the sweepers on the market all have the problem,that is, a single mopping roller do not have the functions of rubbishcleaning and floor mopping, so the overall volume of the sweeper is big,and the cost is higher.

SUMMARY OF THE INVENTION

In order to solve the above problems, the present invention provides thesociety with a double-roller floor washing robot capable of cleaning therollers while cleaning a floor, capable of mopping the floor whilesweeping the floor, having a simpler structure and a smaller overallvolume, and more convenient to use.

The present invention further provides the society with a floor washingmethod of the double-roller floor washing robot capable of cleaning therollers while cleaning a floor, capable of mopping the floor whilecleaning rubbish, having a simpler structure and a smaller overallvolume, and more convenient to use.

The technical solution of the present invention is: provided is adouble-roller floor washing robot, comprising a robot body, wherein therobot body is provided with a cleaning apparatus and an air outlet; thecleaning apparatus comprises a roller assembly and a water circulationsystem; the roller assembly comprises a first roller and a second rollerwhich are disposed in parallel, and a roller drive apparatus for drivingthe first roller and the second roller to rotate; the rotation directionthe first roller is consistent with the forward or backward direction ofthe robot; the rotation direction of the second roller is opposite tothe rotation direction of the first roller; the water circulation systemcomprises a clear water tank, a roller gear box, a drain water tank, anda fan; the first roller and the second roller are located in the rollergear box; the roller gear box is provided with a water flow passage; thewater flow passage is provided with a plurality of water outlet holesfacing the first roller and/or the second roller; the clear water tankis in communication with the water flow passage of the roller gear box;the roller gear box is in communication with the drain water tank; thedrain water tank is in communication with the fan via a first air duct;and the fan is in communication with the air outlet via a second airduct.

As an improvement of the present invention, the roller gear boxcomprises a first box body, and a second box body enwrapping the firstbox body; the first box body and the second box body are providedtherebetween with a sealed accommodation chamber, so as to form thewater flow passage.

As an improvement of the present invention, the drain water tankcomprises a drain water tank body, a filtration apparatus, and a drainwater tank induction apparatus; and the drain water tank inductionapparatus is electrically connected to a control system of the robot.

As an improvement of the present invention, the clear water tankcomprises a clear water tank body, a water pump disposed in the clearwater tank body, and a clear water tank induction apparatus; and theclear water tank induction apparatus is electrically connected to thecontrol system of the robot.

As an improvement of the present invention, the roller gear box isprovided with a drain water recovery groove at the internal bottom at aposition corresponding to the first roller and the second roller.

As an improvement of the present invention, the first roller comprises afirst roller body, and a cleaning cloth disposed on the outer surface ofthe first roller body.

As an improvement of the present invention, the outer surface of thecleaning cloth is made from one of nylon, bamboo fiber, dacron, andchinlon, or a combination thereof.

As an improvement of the present invention, the second roller has thesame structure as the first roller.

Another technical solution of the present invention is: provided is afloor washing method of the double-roller floor washing robot,comprising: the robot is activated; the first roller and the secondroller rotate close to a floor under the action of the roller driveapparatus; the water pump pumps clear water from the clear water tank,and sprays the clear water on the rolling first roller and second rollervia the water outlet hole of the water flow passage; while the firstroller and the second roller clean the floor, the first roller and thesecond roller are also cleaned; the rolling first roller rotates in theforward or backward direction of the robot, and the second rollerrotates in a direction opposite to the first roller; under the action ofcentrifugal forces of the first roller and the second roller, the watersprayed on the first roller and the second roller or on the floor isthrown away from the first roller and the second roller; the fan sucksthe water and rubbish on the first roller and the second roller or onthe floor in the drain water tank, so as to clean the floor, the firstroller and the second roller.

In the present invention, the double-roller floor washing robotcomprises a robot body, wherein the robot body is provided with acleaning apparatus and an air outlet; the cleaning apparatus comprises aroller assembly and a water circulation system; the roller assemblycomprises a first roller and a second roller which are disposed inparallel, and a roller drive apparatus for driving the first roller andthe second roller to rotate; the rotation direction the first roller isconsistent with the forward or backward direction of the robot; therotation direction of the second roller is opposite to the rotationdirection of the first roller; the water circulation system comprises aclear water tank, a roller gear box, a drain water tank, and a fan; thefirst roller and the second roller are located in the roller gear box;the roller gear box is provided with a water flow passage; the waterflow passage is provided with a plurality of water outlet holes facingthe first roller and/or the second roller; the clear water tank is incommunication with the water flow passage of the roller gear box; theroller gear box is in communication with the drain water tank; the drainwater tank is in communication with the fan via a first air duct; andthe fan is in communication with the air outlet via a second air duct.In the present invention, while the first roller and the second rollermop the floor, under the action of centrifugal forces of the firstroller and the second roller, the water sprayed on the first roller andthe second roller or on the floor is thrown away from the first rollerand the second roller; the fan sucks the water and rubbish on the firstroller and the second roller or on the floor in the drain water tank.That is, while the first roller and the second roller mop the floor, therubbish on the floor is also cleaned, and the first roller and thesecond roller themselves are also cleaned. Therefore, the presentinvention can clean the rollers while cleaning a floor, can mop thefloor while sweeping the floor, has a simpler structure and a smalleroverall volume, and is more convenient to use.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a stereoscopic structural schematic view of the interioraccording to one embodiment of the present invention;

FIG. 2 is a stereoscopic exploded structural schematic view according tothe present invention;

FIG. 3 is a stereoscopic structural schematic view of the first rollerand the second roller in

FIG. 2;

FIG. 4 is a stereoscopic structural schematic view of the drain watertank and the clear water tank in FIG. 2;

FIG. 5 is a structural schematic view of the rolling first roller andsecond roller;

FIG. 6 is a schematic view how the clear water tank supplies water; and

FIG. 7 is a schematic view how the drain water tank recovers drainwater.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

With reference to FIG. 1-3, FIG. 1-3 disclose a double-roller floorwashing robot, comprising a robot body 1, wherein the robot body 1 isprovided with a cleaning apparatus and an air outlet; the cleaningapparatus comprises a roller assembly and a water circulation system 6;the roller assembly 5 comprises a first roller 51 and a second roller 52which are disposed in parallel, and a roller drive apparatus for drivingthe first roller 51 and the second roller 52 to rotate; the rotationdirection the first roller 51 is consistent with the forward or backwarddirection of the robot; the rotation direction of the second roller 52is opposite to the rotation direction of the first roller 51; the watercirculation system comprises a clear water tank 61, a roller gear box64, a drain water tank 62, and a fan 65; the first roller 51 and thesecond roller 52 are located in the roller gear box 64; the roller gearbox 64 is provided with a water flow passage 71; the water flow passage71 is provided with a plurality of water outlet holes 72 facing thefirst roller 51 and/or the second roller 52; the clear water tank 61 isin communication with the water flow passage 71 of the roller gear box64; the roller gear box 64 is in communication with the drain water tank62; the drain water tank 62 is in communication with the fan 65 via afirst air duct 66; and the fan 65 is in communication with the airoutlet via a second air duct. When the present invention is used, therobot is activated; the first roller 51 and the second roller 52 rotateclose to a floor under the action of the roller drive apparatus 53; thewater pump 612 pumps clear water from the clear water tank 61, andsprays the clear water on the rolling first roller 51 and second roller52 via the water outlet hole 72 of the water flow passage 71; while thefirst roller 51 and the second roller 52 mop the floor, the first roller51 and the second roller 52 themselves are also cleaned; the rollingfirst roller 51 rotates in the forward or backward direction of therobot, and the second roller 52 rotates in a direction opposite to thefirst roller 51; under the action of centrifugal forces of the firstroller 51 and the second roller 52, the water sprayed on the firstroller 51 and the second roller 52 or on the floor is thrown away fromthe first roller 51 and the second roller 52; the fan 65 sucks the waterand rubbish on the first roller 51 and the second roller 52 or on thefloor in the drain water tank 62. Therefore, in the present invention,while the first roller 51 and the second roller 52 mop the floor, therubbish on the floor is also cleaned, and the first roller 51 and thesecond roller 52 themselves are also cleaned. The rollers are cleanedwhile the floor is mopped. Compared with the prior art, the presentinvention does not need to shut down the robot to clean the rollers, andis extraordinarily convenient to use. In addition, in the presentinvention, the first roller 51 and the second roller 52 mop the floorwhile cleaning rubbish. Compared with the prior art, the presentinvention has a smarter and simpler structure, a smaller overall volume,and a lower cost.

In the present invention, preferably, the roller gear box 64 comprises afirst box body 641, and a second box body 642 enwrapping the first boxbody 641; the first box body 641 and the second box body 642 areprovided therebetween with a sealed accommodation chamber, so as to formthe water flow passage 71.

In the present invention, preferably, the drain water tank 62 comprisesa drain water tank body, a filtration apparatus, and a drain water tankinduction apparatus; and the drain water tank induction apparatus iselectrically connected to a control system of the robot. When the drainwater tank body is full of drain water, the drain water tank inductionapparatus is triggered; and the control system induces the informationof the drain water tank induction apparatus, controls the robot to moveto a base station, and recovers the drain water in the drain water tank62.

In the present invention, preferably, the clear water tank 61 comprisesa clear water tank body, a water pump 612 disposed in the clear watertank body, and a clear water tank induction apparatus; and the clearwater tank induction apparatus is electrically connected to the controlsystem of the robot. When the clear water in the clear water tank bodyis used up, the clear water tank induction apparatus is triggered; andthe control system induces the information of the clear water tankinduction apparatus, controls the robot to move to the base station, andfills the clear water tank 61 with clear water.

In the present invention, preferably, the roller gear box 64 is providedwith a drain water recovery groove (not shown in the figure) at theinternal bottom at a position corresponding to the first roller 51 andthe second roller 52. The drain water recovery groove recovers the drainwater dropped from the first roller 51 and the second roller 52.

In the present invention, preferably, the first roller 51 comprises afirst roller body, and a cleaning cloth disposed on the outer surface ofthe first roller body. In the present invention, preferably, the outersurface of the cleaning cloth is made from one of nylon, bamboo fiber,dacron, and chinlon, or a combination thereof, such that the cleaningcloth has good floor mopping and cleaning effects. In the presentinvention, preferably, the second roller 52 has the same structure asthe first roller 51.

The present invention further provides a floor washing method of thedouble-roller floor washing robot, comprising: the robot is activated;the first roller 51 and the second roller 52 rotate close to a floorunder the action of the roller drive apparatus 53; the water pump 612pumps clear water from the clear water tank 61, and sprays the clearwater on the rolling first roller 51 and second roller 52 via the wateroutlet hole 72 of the water flow passage 71; while the first roller 51and the second roller 52 clean the floor, the first roller 51 and thesecond roller 52 are also cleaned; the rolling first roller 51 rotatesin the forward or backward direction of the robot, and the second roller52 rotates in a direction opposite to the first roller 51; under theaction of centrifugal forces of the first roller 51 and the secondroller 52, the water sprayed on the first roller 51 and the secondroller 52 or on the floor is thrown away from the first roller 51 andthe second roller 52; the fan 65 sucks the water and rubbish on thefirst roller 51 and the second roller 52 or on the floor in the drainwater tank 62, so as to clean the floor, the first roller 51 and thesecond roller 52.

1. A double-roller floor washing robot, comprising a robot body (1),wherein the robot body (1) is provided with a cleaning apparatus and anair outlet; the cleaning apparatus comprises a roller assembly and awater circulation system; the roller assembly comprises a first roller(51) and a second roller (52) which are disposed in parallel, and aroller drive apparatus for driving the first roller (51) and the secondroller (52) to rotate; the rotation direction the first roller (51) isconsistent with the forward or backward direction of the robot; therotation direction of the second roller (52) is opposite to the rotationdirection of the first roller (51); the water circulation systemcomprises a clear water tank (61), a roller gear box (64), a drain watertank (62), and a fan (65); the first roller (51) and the second roller(52) are located in the roller gear box (64); the roller gear box (64)is provided with a water flow passage (71); the water flow passage (71)is provided with a plurality of water outlet holes (72) facing the firstroller (51) and/or the second roller (52); the clear water tank (61) isin communication with the water flow passage (71) of the roller gear box(64); the roller gear box (64) is in communication with the drain watertank (62); the drain water tank (62) is in communication with the fan(65) via a first air duct (66); and the fan (65) is in communicationwith the air outlet (11) via a second air duct.
 2. The double-rollerfloor washing robot according to claim 1, wherein the roller gear box(64) comprises a first box body (641), and a second box body (642)enwrapping the first box body (641); the first box body (641) and thesecond box body (642) are provided therebetween with a sealedaccommodation chamber, so as to form the water flow passage (71).
 3. Thedouble-roller floor washing robot according to claim 2, wherein thedrain water tank (62) comprises a drain water tank body, a filtrationapparatus, and a drain water tank induction apparatus; and the drainwater tank induction apparatus is electrically connected to a controlsystem of the robot.
 4. The double-roller floor washing robot accordingto claim 1, wherein the clear water tank (61) comprises a clear watertank body, a water pump (612) disposed in the clear water tank body, anda clear water tank induction apparatus; and the clear water tankinduction apparatus is electrically connected to the control system ofthe robot.
 5. The double-roller floor washing robot according to claim1, wherein the roller gear box (64) is provided with a drain waterrecovery groove at the internal bottom at a position corresponding tothe first roller (51) and the second roller (52).
 6. The double-rollerfloor washing robot according to claim 1, wherein the first roller (51)comprises a first roller body, and a cleaning cloth disposed on theouter surface of the first roller body.
 7. The double-roller floorwashing robot according to claim 6, wherein the outer surface of thecleaning cloth is made from one of nylon, bamboo fiber, dacron, andchinlon, or a combination thereof.
 8. The double-roller floor washingrobot according to claim 6, wherein the second roller (52) has the samestructure as the first roller (51).
 9. A floor washing method of thedouble-roller floor washing robot, comprising: the robot is activated;the first roller (51) and the second roller (52) rotate close to a floorunder the action of the roller drive apparatus (53); the water pump(612) pumps clear water from the clear water tank (61), and sprays theclear water on the rolling first roller (51) and second roller (52) viathe water outlet hole (72) of the water flow passage (71); while thefirst roller (51) and the second roller (52) clean the floor, the firstroller (51) and the second roller (52) are also cleaned; the rollingfirst roller (51) rotates in the forward or backward direction of therobot, and the second roller (52) rotates in a direction opposite to thefirst roller (51); under the action of centrifugal forces of the firstroller (51) and the second roller (52), the water sprayed on the firstroller (51) and the second roller (52) or on the floor is thrown awayfrom the first roller (51) and the second roller (52); the fan (65)sucks the water or rubbish on the first roller (51) and the secondroller (52) or on the floor in the drain water tank (62), so as to cleanthe floor, the first roller (51) and the second roller (52).
 10. Thedouble-roller floor washing robot according to claim 2, wherein theclear water tank (61) comprises a clear water tank body, a water pump(612) disposed in the clear water tank body, and a clear water tankinduction apparatus; and the clear water tank induction apparatus iselectrically connected to the control system of the robot.
 10. Thedouble-roller floor washing robot according to claim 2, wherein theclear water tank (61) comprises a clear water tank body, a water pump(612) disposed in the clear water tank body, and a clear water tankinduction apparatus; and the clear water tank induction apparatus iselectrically connected to the control system of the robot.
 11. Thedouble-roller floor washing robot according to claim 3, wherein theclear water tank (61) comprises a clear water tank body, a water pump(612) disposed in the clear water tank body, and a clear water tankinduction apparatus; and the clear water tank induction apparatus iselectrically connected to the control system of the robot.
 12. Thedouble-roller floor washing robot according to claim 2, wherein theroller gear box (64) is provided with a drain water recovery groove atthe internal bottom at a position corresponding to the first roller (51)and the second roller (52).
 13. The double-roller floor washing robotaccording to claim 3, wherein the roller gear box (64) is provided witha drain water recovery groove at the internal bottom at a positioncorresponding to the first roller (51) and the second roller (52). 14.The double-roller floor washing robot according to claim 2, wherein thefirst roller (51) comprises a first roller body, and a cleaning clothdisposed on the outer surface of the first roller body.
 15. Thedouble-roller floor washing robot according to claim 3, wherein thefirst roller (51) comprises a first roller body, and a cleaning clothdisposed on the outer surface of the first roller body.